#------------------------------------------------------------------------------
#$Date: 2024-04-25 16:59:02 +0200 (jue 25 de abr de 2024) $
#$Revision: 291351 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/55/9005543.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9005543
loop_
_publ_author_name
'Tribaudino, M.'
'Nestola, F.'
_publ_section_title
;
 Average and local structure in P2_1/c clinopyroxenes along the
 join diopside-enstatite (CaMgSi2O6-Mg2Si2O6)
 Sample: Di23En77 (non-split model)
;
_journal_name_full               'European Journal of Mineralogy'
_journal_page_first              549
_journal_page_last               555
_journal_paper_doi               10.1127/0935-1221/2002/0014-0549
_journal_volume                  14
_journal_year                    2002
_chemical_formula_sum            'Ca0.23 Mg1.77 O6 Si2'
_chemical_name_mineral           Enstatite
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 108.31
_cell_angle_gamma                90
_cell_length_a                   9.690
_cell_length_b                   8.862
_cell_length_c                   5.229
_cell_formula_units_Z            4
_cell_volume                     426.295
_database_code_amcsd             0006931
_exptl_crystal_density_diffrn    3.185
_cod_original_formula_sum        'Ca.23 Mg1.77 Si2 O6'
_cod_database_code               9005543
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
x,1/2-y,1/2+z
-x,1/2+y,1/2-z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
CaM2 0.25460 0.02220 0.22850 0.23000 0.01722
MgM2 0.25460 0.02220 0.22850 0.77000 0.01722
MgM1 0.25050 0.65390 0.22840 1.00000 0.00785
SiTA 0.04150 0.34170 0.27820 1.00000 0.00735
SiTB 0.54840 0.83910 0.23480 1.00000 0.00849
O1A 0.86650 0.33960 0.17190 1.00000 0.00646
O2A 0.11830 0.50190 0.32150 1.00000 0.01013
O3A 0.10490 0.26790 0.58740 1.00000 0.01659
O1B 0.37270 0.83840 0.13130 1.00000 0.01001
O2B 0.62860 0.98830 0.37140 1.00000 0.01672
O3B 0.60480 0.70920 0.47600 1.00000 0.01418
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0006931
